Research On Aviation Material Management Of Cargo Airlines

Aircraft materials are crucial for the economic benefit for aviation company,and play an important role in airlines operation.The types and ages of aircrafts used in cargo airlines are very old,unscheduled removals of aircraft parts in cargo airlines is higher than passenger airlines.The scale of fleet and terminals in domestic is small,and it is hard to build an effective shared network of aircraft material.The effective management of aircraft materials is one of main problems in the operation.This paper focuses on the basic information of one cargo airline to reduce the cost of aircraft materials and improve the utilization of them.The classification of aircraft materials,the aircraft spare part demand forecasting,and the multi-echelon inventory allocation of turnover parts have been detailed discussed.The main contents of this paper are as follows:1)Based on the actual operational data of the cargo airline,choose suitable properties of aircraft materials to be “aircraft material property factors”.The classification model of the importance of aircraft materials is built,which is based on the combination of triangle fuzzy theory,Analytic hierarchy process(AHP),and the traditional ABC classification.The fitness and the effectiveness of this model are confirmed by the analysis of the real operational data.2)Taking turnover parts of Category A in the result of classification as the reference object,analyzed the traditional demand forecast methods compared to the neural net algorithm.The wavelet neural network and the gray neural network are improved.The composition model is established with Moving Average Method(MA)and neural net algorithm.For each requirement type of aircraft materials,the corresponding demand forecast method is established.The daily amount of removals of 14 aircraft materials is used to verify the accuracy and the fitness of demand forecast models.3)Based on the classification and the demand forecast of aircraft materials,the multi-echelon inventory allocation model of turnover parts was built for the operation model between the foundation and different stations.The sum of expected shortage(EBO)in different stations and foundation was taken as the objective function.The cost of aircraft materials was taken as the limiting condition.The allocation result was on the basis of the margin effect analysis.Compared with the recommended amount of Boeing to verify the fitness and the effectiveness of this model.In view of the operational data of the cargo airline,paper has raised models of classification,demand forecast and multi-echelon inventory allocation.Taken the operation data of aircraft materials as examples,the fitness and the effectiveness have been proved,and provided a reference for aircraft materials management of cargo airlines.